728087272772 has 12 divisors (see below), whose sum is σ = 1274158705596. Its totient is φ = 364041928320.

The previous prime is 728087272747. The next prime is 728087272813. The reversal of 728087272772 is 277272780827.

It can be written as a sum of positive squares in 2 ways, for example, as 550706473216 + 177380799556 = 742096^2 + 421166^2 .

It is a super-2 number, since 2×728087272772² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413848 + ... + 1858800.

It is an arithmetic number, because the mean of its divisors is an integer number (106179892133).

Almost surely, 2^728087272772 is an apocalyptic number.

It is an amenable number.

728087272772 is a deficient number, since it is larger than the sum of its proper divisors (546071432824).

728087272772 is a wasteful number, since it uses less digits than its factorization.

728087272772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854038 (or 854036 counting only the distinct ones).

The product of its (nonzero) digits is 17210368, while the sum is 59.

The spelling of 728087272772 in words is "seven hundred twenty-eight billion, eighty-seven million, two hundred seventy-two thousand, seven hundred seventy-two".